Tom Holden
tomholden84.bsky.social
Tom Holden
@tomholden84.bsky.social
Maths and maths teaching. Also Sport, History, Geography, politics....
Yes please. I'll pm you my email.
October 25, 2025 at 2:44 PM
I see this a lot. I think it's because they don't want the 2-3 kids who got it wrong to feel bad. Which is crazy as no one then knows if they got the answer right.
July 25, 2025 at 6:56 PM
Angle at the centre is double the angle at the circumference?
June 21, 2025 at 3:58 PM
Because your resources are great. Love how you isolate particular skills. Also really like that you upload the word doc, so can edit the questions to suit the group I'm teaching.
February 7, 2025 at 10:02 PM
#FridayFive
1. Girl, you have no faith in medicine. White Stripes
2. Silvia's Mother. Dr Hook
3. Boys Don't Cry. The Cure
4. Subterranean Homesick Blues - Dylan
5. Fever to tell. The Yeah Yeah Yeahs.
February 7, 2025 at 8:33 PM
Which is what we discussed in the workgroup. So tried it again...
February 6, 2025 at 5:46 PM
*beads
However, I realised what is important is what stays the same (Blue).
February 6, 2025 at 5:46 PM
Initially I tried "following the method". But obviously it is a different type of problem as the number of marbles changes.
February 6, 2025 at 5:46 PM
Thanks
February 6, 2025 at 5:45 PM
I was looking at this with a workgroup a few weeks back. It worked quite nicely with a bar model and setting up of an equation. But we didn't explore pure multiplicative reasoning as above. I wondered if Andrews method was generalisable to all problems of this type...
February 6, 2025 at 5:37 PM
Although I went (4x+8)/6=(7x/8)/5.
February 6, 2025 at 6:08 AM
Yes
February 6, 2025 at 6:06 AM
Yes it's definitely. Equivalent fractions / ratio table. I guess my point was that there's more to do than purely multiplicative reasoning. Not sure that really matters though

What was your method?
February 5, 2025 at 10:26 PM
Or proportion! You could systematically list out possible combinations of starting numbers and then take the 8 off to see if it fits the new ratio. That requires multiplicative reasoning but it's more than just that. Or you could form an equation and solve, which is not multiplicative reasoning.
February 5, 2025 at 6:34 PM
480 = 16*30 =?* 15 ; 16*2*15=32*15 hence ?=32
December 18, 2024 at 5:54 PM
1. Visions of Johanna. Dylan
2. American Pie. Don McLean
3. Insomnia. Faithless
4. Blue Monday. New Order
5. Stan. Eminem
#FridayFive
November 15, 2024 at 7:32 PM
Yes, so a kind of special rotation. 180 degrees using the line as axis of rotation. Does this breakdown mathematically at any point?
November 1, 2024 at 11:55 AM
I'd argue a reflection is a rotation
October 31, 2024 at 10:17 PM
📌
September 2, 2024 at 4:40 PM
🤣
August 16, 2024 at 7:20 AM
📌
August 15, 2024 at 7:25 PM